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You get a properly sized low value resistance of high accuracy like 1% known resistance say 1 ohm.
Then you place the wire that you want to measure in series with the resistor and place the voltmeter across the resistor.
So if you have a 1 ohm resistor and the meter is reading 1 volt then you have 1 amp flowing in there.
you need to unhook the negative battery cable and set your mutimeter to amps and connect it between the negetive cable and the battery and that will tell you what kind of draw you have just make sure that your multi meter is set up right
You can't measure the current drawn by a car. The current is WAY to high for most meters. Most meters will only measure up to 10Amps. The first guy has the best idea. Get a 1ohm resistor and measure the voltage across it. The voltage measured divided by the resistor value equals the current consumption.
If you have to use a voltmeter the first answer is right just make sure its a 5 or 10 watt resistor at least and don't turn the key definitely.Just measure for current being taken that shouldn't be.
And yes you can use an ammeter to measure the current make sure its on the correct range (1 amp or 10 amp is better) and don't turn the key just check for current being drawn other than the starter and relay.If you turn the key big trouble lol.Probably burn out the meter burn yourself if using a resistor or just not good :) And don't wory about a 1% resistor 5% or 10 % is fine to just get a good idea of the amount of current.
Wiki User
∙ 8y ago
Wiki User
∙ 14y agoWell find a good source of the voltage and add the meter. but to what end you need such a device in a car it baffles me.
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Do you need to charge your capacitor before you install it?
Yes you must charge it before hooking it up. You can charge it with a 12 volt light bulb with leads or a voltmeter.
Which type digital voltmeter is the of fatest all digital voltmeter?
You mean fastest? Digital voltmeter gives reading in seconds.
What is voltmeter?
A voltmeter is a measuring instrument that is used in the measurement of the electric potential in volts.
Why there is an extension range of voltmeter when a series resistance not equal to voltmeter is used?
why is extention
Which voltmeter will used for measuring 50kv dc?
Any standard voltmeter but however the voltage to be measured must be stepped down to a safe value using a Potential transformer.
How do you know the battery of your car is dead?
No start? No turnover? No horn? No lights? Check with a voltmeter
A cars speedometer measures?
The car's speedometer indicates the car's instantaneous speed. This is a big part of the reason that it's not called the car's accelerometer, thermometer, or voltmeter.
Where do you get block heater put in your car?
Do you mean where on a car is a block heater install or who do you take the car to to install?
How do you install your python car alarm?
how do you install your python 1400 xp car alarm
Volts light came on in 98 Chevy lumina car wont drive what does this mean?
Alternator is not charging battery sufficiently check with voltmeter With engine running voltmeter should read 13.8-14.2
How can one install the Bluetooth car speaker?
There is a very easy way for one to install the Bluetooth car speaker. One can install the Bluetooth car speaker by plugging the device into the car's built-in stereo system.
Where is the throttle sensor on celebrity engine?
A throttle position sensor on any car is on the side of the throttle body. You can backprobe it with a voltmeter to check its operation. If you remove it, you'll have to calibrate it with the voltmeter, adjusting it within slotted holes.
How do you test a cars alternator?
1st you start up the car. Hook up a voltmeter to the battery, and put a load on the battery as the car is running (have the lights on, radio on, high beam on,...) after you put a load on the battery read the voltmeter. if it goes below 12 the alternator is bad. It souldn't be no more than 14 volts. you can also use the battery gauge but to be 100% sure hook voltmeter to the alternator.
Do you need to charge your capacitor before you install it?
Yes you must charge it before hooking it up. You can charge it with a 12 volt light bulb with leads or a voltmeter.
Which car speakers are the easiest to install?
All car speakers will be equally easy to install, as their sizes and interfaces are standardized.
Voltmeter in series?
No. Voltmeter in parallel. Ammeter in series.
What is a dc voltmeter?
It is a voltmeter which can only measure direct current.
